This article proposes a novel disturbance-observer-based complementary sliding-mode (DO-CSM) speed controller for the field-oriented controlled permanent-magnet synchronous motor (FOC-PMSM) drive system. At first, rotor dynamics of PMSM system considering lumped disturbance, which consists external disturbances, parametric uncertainties, and unmodeled dynamics, is presented. Then, classic CSM typical artificial neural network (ANN)-based controller, i.e., Elman NN (ENN)-based intelligent...

The degradation seriously affects the durability and cost of proton exchange membrane fuel cell (PEMFC). This article presents a novel model-driven method based on frequency-domain Kalman filter (FDKF) voltage model to predict PEMFC in frequency domain. advantage proposed FDKF is that it can process data groups; thus, computation time be greatly reduced with high accuracy. Two experiments under constant quasi-dynamic currents have been used demonstrate its prognosis performances different...

Synchronous reluctance machine (SynRM) has been studied widely in order to reduce its high torque ripple and improve low power factor. This article proposes a reduction method for SynRM by defining novel parameter-torque function. With the help of function, optimal currents aiming compensate harmonics are obtained. The advantage proposed is that function can be obtained easily achieved simple control method. For purpose verifying method, both simulations experiments performed. Finally,...

Abstract To address the robust speed control problem of surface‐mounted permanent‐magnet synchronous motor (SPMSM) drive, a novel composite controller (CSC) is proposed, which consists modified super‐twisting sliding‐mode SC (STSM‐SC) and extended state observer (ESO). Regarding motion dynamics SPMSM unmodeled dynamics, endogenous, exogenous disturbances are lumped together as total disturbance. The ESO‐based feedforward compensation mechanism used to deal with disturbance for robustness...

This study consists on online detection of fuel cell dysfunction in embedded applications without additional hardware component. The power converter usually coupled with the is used to perform diagnosis strategy. main interest method presented this paper simultaneously optimize performances, cost and size Proton Exchange Membrane Fuel Cell (PEMFC). In work, we focus a system including stack an isolated DC/DC controlled by Digital Signal Processor (DSP). These elements associated measurement...

An original non-invasive methodology of the fuel cell diagnosis is proposed to identify different positions faults in Proton Exchange Membrane Fuel Cell (PEMFC) stacks from external magnetic field measurements. The approach based on computing difference between normal and faulty PEMFC operating conditions. To evaluate distribution, this paper, we propose an improved design analyzer. This analyzer amplifies around perform accurate detection fault position. Moreover, main contribution work...

Abstract Durability is a severe problem in the commercial application of proton exchange membrane fuel cell (PEMFC). The platinum (Pt) catalyst which greatly affects performance and durability one most important components PEMFC. However, few PEMFC degradation models focused on Pt process molecule scale. In this paper, novel model developed based transformation theory. model, degrades by changing form size according to theory, includes dissolution Ostwald ripening mechanisms. advantage new...

In this paper the authors study first step of power inverter and permanent magnets synchronous machine (PMSM) sizing, considering application to a flywheel energy storage system. Knowing operating characteristics drive defined by application, our approach is based on determining evolution both torque converter current as functions rotational speed. It shown that those curves strongly depend relative speed range constant operations. The explain how choose Ω <sub...

This paper presents a subdomain model suitable for high-speed surface-mounted permanent-magnet machines. The is presented with focus on computation time and calculations of some relevant values particular to results are compared both finite element analysis simulations measurements an existing prototype. good accuracy the high speed allow efficient optimization process. Finally, discussed further developpement proposed.

Purpose The purpose of this paper is to propose a new method that allows compare the magnetic pressures different pulse width modulation (PWM) strategies in fast and efficient way. Design/methodology/approach voltage harmonics are determined using double Fourier integral. As for current waveforms, generic model based on Park transformation dq machine was established taking saturation into consideration. obtained analytical waveforms then injected finite element software compute nodal forces....